Francis h



miners nfi vnicnr, or RICHMOND, mount, ASSlGNOI't so HiMSELF, WILLIAM c. suns, AND-B. n. PRATT, or SAME PLACE.

Let-42? Patent No. ii-52 3, dated fli aj/ 23, 18.67.

IMPROVEMENT IN TAZJNING.

cilgr fitlgeh'ule nictm it in tlges rem-.6 33min amt mailing putt m figs same.

TU ALL WHQM 1T lLLlAY CONCERN:

Be it knoivn that ii, FRANCIS H. WEIGHT, the city of Richmond, in the county of Wayne, and State of lnolionashove inventerl a. new and improved Process of Tanning Leather, Furs, and Skins; and I do hereby declare that the following is zi=fnll and exact description of the process and material used, reference being had to the accompanying Formnlm and samples, and to the letters of reference innrked thereon.

The nature of my invention consists, first, in the use of 'the proportion of ingredients as namecl in'the accompanying formulae, letters A and B; second, the manner of treatment (lescribedes follows:

I Formula A. ten pounds cetechn; one-half ounce saltpetre; (2) two pounds Glamher salts; one and a half pound Sponish whiting; one pounclsnlphurie mid; one pound solo.

i Formula B.

1-1) one and a half ounce saltpetre; (1).one .pounflalum; -Ekl'OHE-ll-Zlf, pound salt; (-6) six ounces sulphuric acid. I

When'hides and skins have been unhaired, flesheil, and hated by the usual process,'have dissolved in one end a half gallon hot Welter the first four ingredients in formula A, and add when cold the sulphuric acid. Then to water sufiicicnt to cover the hides add of this solution or tnnliquor sulfici'ent to color the water brown, then immerse skins, and handle or stir them for (10) ten minutes, then remove and add as much more tan liquor,

then handle again for fifteen to twenty minutes. Remove skins second time and strengthen and handle, nsbeforqand as soon as the grain begins to feel rough and is of light brown color, remove toe skins the third time, and in the balance of the prepared tan liquor dissolve the last-nameli article (salt) in formula A, anrl of this add one-half, and immerse hides and skins and handle'(3(l)' thirty to fifty minutes. Then remove fourth time and add balance 05 the ten preparation, and handle three or four. times cl'aily until tanned, which will require from a. few hours to (4:) four to six days according to kind of e lrins. The above is suilieient for (5) five or (6) six calior sheep-skins. For heavy hides strengthen daily until tanned.

Second. In tanning furs and skins the materials named in and in the proportion of formula B, are used in the liellowingmanner: Dissolve the first three ingredients in one quart warm water, and ,When hold. add the sol phurie acid. To wot-er sufiicient toeover (6) six small hides add one-half of the solution, immerse the skins, and

add the remainder of the solution, and handle occasionally until tanned, when they are rinsed and hung up to dry.

What I claim as my invention, is

The use ot'theproportion of ingredients named in forinulze A and B, and the manner ol'spplying the some to hides, furs, enrl skins for the purpose of tanning the same rapidly and eifeetnelly. v

' FRANCIS H. WRIGHT.

Witnessesn I FRANK M. SLADE JOHN H. Porn. 

